Oi

Oi is a provider of telecommunication services in Brazil. At the end of 2014, Oi had 74,5 million clients, divided as follows: 17,5 million residential RGUs, including fixed telephony, broadband and Pay TV; 48,5 million clients in the segment of personal mobility, of which 41,3 million pre-paid and 7,1 million post-paid users; 7,9 million users in the business/corporate segment, including fixed and mobile telephony and broadband; and 0,7 million public telephony (TUPs) terminals. The company was founded in 1963 and is headquartered in Rio de Janeiro.